Just when you thought Ukip had reached their nadir with Godfrey Bloom’s rant about “bongo bongo land”, Hugh Williams, the party's assistant treasurer pops up having penned a book detailing a non-PC history of the world.

Within Williams’ self-published, 350-page tome, the 67-year-old claims that Winston Churchill admired his fellow wartime leaders Hitler and Stalin, and that the brutal Nazi invasion of Poland was a result of “goading” by Warsaw.

First reported by the Evening Standard, the book, entitled From Ur to Us, Everything you Need to Know about History, makes a series of claims that will cause yet another headache for beleaguered Ukip leader Nigel Farage, still reeling from Stuart Wheeler’s recent admonishment of companies that promote women to the boardroom.

Likely to add to Farage’s woes is Williams’ claim that child abuse in the Catholic Church was “negligible”, and that the German invasion of Poland in 1939 was due to “Polish aggression”.